Max10: ADC not working with .pof file

Hi Alex

You're right. I did some investigation in the power supplies for Max10, and it seems like our analog supply takes quite long until it reaches full voltage level (we're using Max10 dual supply device, which requires two digital supplies and 1 analog supply).

As in Max10 Power management user guide, it looks like only the last power supply for Max10 matter (attached picture), so we tried to swtich on the analog supply first and wait for it to reach max level, and then switch on the other two digital supplies, which take only few hundred µs to reach max level. This helps the not-working ADC to become working sporatically (not always working).

However when we take a working board (ADC always works) and do the reverse sequence (i.e let two digital supplies on first, then the analog supply), the ADC is still working (we expected that it should not work anymore).

So somehow the ADC problem relates to the power supply sequence and the ramp time of power supplies, but a clear explanation for this problem has been not found yet.

Thanks,